Jeff Kinney is an American game designer, cartoonist, and author of children's books including the Diary of a Wimpy Kid book series. Three of the Wimpy Kid books (Diary of the Wimpy Kid, Dog Days, and Rodrick Rules) have been adapted into movies. Kinney is also the creator of the kid-friendly website Poptropica, an online role-playing educational website. In 2015, Kinney and his wife Julie opened an independent bookstore and cafe in Massachusetts.